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Schmid factors (m) for typical slip modes (basal 〈a〉, prismatic 〈a〉, pyramidal 〈a〉 and 〈c+a〉 slips) and twinning patterns ({101¯2} and {101¯1} twins) were systematically calculated in hexagonal close-packed Cd, Zn, Mg, Zr, Ti and Be. A monotonic effect on m-values was presented for pyramidal 〈a〉 and 〈c+a〉 slips, and {101¯2} and {101¯1} twinning patterns with decreasing c/a ratio. The results calculated...
The strain rate sensitivity (SRS) of a rolled Mg–3Al–3Sn (AT33) alloy increased with decreasing grain size at room temperature, owing to a change in the deformation mechanism from dislocation-dominated to twinning-mediated. Moreover, as deformation proceeds the SRS for slip-dominated grains (∼6μm) decreases gradually due to continuous activation of 〈c+a〉 slip, while that for twinning-mediated grains...
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